McLean's Cave, California 67-55KYrBP Speleothem Stable Isotope Data Oster, J.L.; Montañez, I.P.; Mertz-Kraus, R.; Sharp, W.D.; Stock, G.M.; Spero, H.J.; Tinsley, J.; Zachos, J.C. Oster, J.L. Montañez, I.P. Mertz-Kraus, R. Sharp, W.D. Stock, G.M. Spero, H.J. Tinsley, J. Zachos, J.C. earth science/paleoclimate/speleothems (depth,null,null,centimeter,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems (age,null,null,calendar kiloyear before present,null,speleothems,null,null,N,null) earth science/paleoclimate/speleothems (delta 13C,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/speleothems earth science/paleoclimate/speleothems (McLean's Cave>LATITUDE 38.07>LONGITUDE -120.42) Dansgaard-Oeschger (D-O) cycles had far-reaching effects on Northern Hemisphere and tropical climate systems during the last glacial period, yet the climatic response to D-O cycles in western North America is controversial, especially prior to 55 ka. We document changes in precipitation along the western slope of the central Sierra Nevada during early Marine Oxygen Isotope Stages (MIS) 3 and 4 (55-67 ka) from a U-series dated speleothem record from McLean's Cave. The timing of our multi-proxy geochemical dataset is coeval with D–O interstadials (15-18) and stadials, including Heinrich Event 6. The McLean's Cave stalagmite indicates warmer and drier conditions during Greenland interstadials (GISs 15-18), signified by elevated d18O, d13C, reflectance, and trace element concentrations, and less radiogenic 87Sr/86Sr. Our record extends evidence of a strong linkage between high-latitude warming and reduced precipitation in western North America to early MIS 3 and MIS 4. This record shows that the linkage persists in diverse global climate states, and documents the nature of the climatic response in central California to Heinrich Event 6. STUDY NOTES: Stable isotope data (d18O and d13C) from McLean's Cave, California stalagmite ML-2 for the interval 67-55 KYrBP NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Oster, J.L. Investigator : Montañez, I.P. Investigator : Mertz-Kraus, R. Investigator : Sharp, W.D. Investigator : Stock, G.M. Investigator : Spero, H.J. Investigator : Tinsley, J. Investigator : Zachos, J.C. 2016-06-22 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/20290 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/california/mcleans2014iso.txt https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/california/mcleans2014iso.txt English https://www.ncdc.noaa.gov/paleo/study/20290 https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/northamerica/usa/california/mcleans2014iso.txt Jessica L. Oster, Isabel P. Montanez, Regina Mertz-Kraus, Warren D. Sharp, Greg M. Stock, Howard J. Spero, John Tinsley, James C. Zachos2014Millennial-scale variations in western Sierra Nevada precipitation during the last glacial cycle MIS 4/3 transitionQuaternary Research821236-24810.1016/j.yqres.2014.04.010http://www.sciencedirect.com/science/article/pii/S0033589414000490 START YEAR: 66965 cal yr BP * END YEAR: 55222 cal yr BP -120.42 38.07 -120.42 38.07